User blog comment:Uncodify/What is your Go-To Pokemon?/@comment-32358261-20180804093654/@comment-32358261-20180807064133

I’m talking opponent has knock off and uses that. However predict that and swap to lucario, gain attack (not lose item since mega) mega evolve and either do more set up (if it’s safe) with swords dance putting you at +3 allowing for wallbreaking potential (as long as not resisted) or simply getting out an attack which would still be pretty threatening.

For doubles you could perhaps get a weak beat up pokemon onto lucario for a +6 boost (+4 if 4v4)